80490640

素因数分解:

$2^4\times 5^1\times {\mathrm{1006133}}^1$

素因数の和:1006146

約数の個数: 20

約数和(自身を含む): 187140924

約数和(自身を除く): 106650284

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1006133, 2012266, 4024532, 5030665, 8049064, 10061330, 16098128, 20122660, 40245320, 80490640]

約数ペア:

[(1, 80490640), (2, 40245320), (4, 20122660), (5, 16098128), (8, 10061330), (10, 8049064), (16, 5030665), (20, 4024532), (40, 2012266), (80, 1006133)]